- Enrollment
- 741
- Students per teacher
- 15.1:1
- Resource Index
- 49/100
High school (grades 9-12) · St Louis, MO
Affton High
Federal NCES profile for Affton High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 290291000009
👥 S:T ratio 39
🌟 Gifted program 30
🎓 Counselors 62
📋 Attendance 24
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Affton High earns 39/100 on the Resource Investment Index, with class sizes larger than 81% of Missouri schools. It is also more racially and ethnically mixed than most Missouri schools.
- #17 of 26
- high schools in St Louis · Resource Index
- 39
- Resource Index · Typical
- 15.2:1
- large classes for Missouri
- 31.7%
- free-lunch eligible
Affton High has class sizes larger than 81% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Affton High ranks #17 of 26 high schools in St Louis, MO.
School address
CCD year-over-year · 2022-23 → 2023-24
+0 students YoY
Affton High held near 739 students from 2022-23 to 2023-24 (+0 headcount).
Teacher FTE held 50.3 → 50.4 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+0 students YoY 290291000009 · St Louis, MO High · MID · TRAD
761 enr · 15.2:1 · 31.7% lunch · RII 39
Nearest enrollment peer: Mesnier Primary Sch. (741 students)
Affton High held near 739 students from 2022-23 to 2023-24 (+0 headcount). Teacher FTE held 50.3 → 50.4 across the same CCD years. Read with this school → · District book → · Missouri schools → · Find another →
Affton High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Affton High
761 students
- Mesnier Primar
Mesnier Primary Sch.
741 students
- Gotsch Interme
Gotsch Intermediate Sch.
562 students
- Rogers Middle
Rogers Middle
555 students
What this shows Affton High reports 761 students on the CCD universe file.
How Affton High compares
Affton High held steady on CCD headcount: ratios and free-lunch share vs Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.2:1 | ▲ 19% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 31.7% | ▼ 31% | 46.1% | 51.7% |
| Enrollment | 761 | top 9% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.2:1
Leaner classes than 45% of US schools, a middle-of-the-pack class size.
761
Bigger than 84% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
31.7%
free-lunch eligible
- 31% below the Missouri average of 46.1%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15.2:1
students per teacher
- 19% above state mean
Top 81% in Missouri - lower ratio than 19% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
30.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$12,103
per pupil, district-wide
- below Missouri avg of $14,087
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 190 students, the combined health-and-guidance staffing load for this school.
Discipline context
29
in-school suspensions + 72 out-of-school
Suspension rate: 3.8 per 100 students. Combined in-school and out-of-school rate: 13.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Student demographics
White 67.5%
African American 10.5%
Two or More 8.7%
Hispanic or Latino 8.5%
Asian 4.3%
Native Hawaiian / Pacific Islander 0.3%
American Indian / Alaska Native 0.1%
Largest group: White at 67.5% of enrollment.
Student-body diversity index 51.7/100
Simpson diversity index - at 51.7, Affton High is more mixed than the Missouri school average of 31.0.
Programs
AP courses offered 23
District finance for Affton 101 reports $12,103 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Affton High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mesnier Primary Sch. | Similar size | Similar economic need | Similar S:T ratio |
| Gotsch Intermediate Sch. | Smaller | Similar economic need | Lower S:T ratio |
| Rogers Middle | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Affton High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 562
- Students per teacher
- 13.4:1
- Resource Index
- 49/100
- Enrollment
- 555
- Students per teacher
- 14.2:1
- Resource Index
- 43/100
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~761 students)
Similar student-teacher ratio (~15.2:1)
Frequently asked questions about Affton High
How many students attend Affton High?
Affton High has 761 students enrolled. It is a high school in St Louis, MO. CCD year-over-year: 739 (2022-23) → 739 (2023-24), nearly flat (+0).
What is the student-teacher ratio at Affton High?
The student-teacher ratio at Affton High is 15.2:1, which is 19% higher than the Missouri average of 12.8:1 and 3% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Affton High?
31.7% of students at Affton High are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Affton High?
The largest demographic group at Affton High is White at 67.5% of enrollment, in St Louis, MO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 51.7/100.
What is the Resource Investment Index for Affton High?
Affton High has a Resource Investment Index of 39/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Affton High rank among high schools in St Louis?
By Resource Investment Index, Affton High ranks #17 of 26 high schools in St Louis, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in St Louis on the city page.
What other schools are in Affton 101?
Besides Affton High, Affton 101 also operates Mesnier Primary Sch. (741 students), Gotsch Intermediate Sch. (562 students), and Rogers Middle (555 students). See the Affton 101 district page for the complete list.